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(No Model.) 3 Sheets-Sheet 1.

J. MIGHAUD.

ROTARY PRINTING PRESS. I No. 520,069. Patented May 22, 1894.

(No Model.) 3 SheetsSheet 2;

J. MIGHAUD.

ROTARY PRINTING PRESS- No. 520,069. Patented May 22, 1894.

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(No Model.) 8 Sheets-Sheet 3.

J. MIGHAUD. ROTARY PRINTING PRESS.

Patented May 22,1894.

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UNITED STATES PATENT OFFICE.

JULES MICHAUD, OF PARIS, FRANCE.

ROTARY PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 520,069, dated May22,1894.

Application filed March 1, 1890. Serial No. 342,311. (No model.)Patented in France December 16, 1829, No. 202,626, and in EnglandJanuary 30,1890,N0.1,635.

ToaZZ whom it may concern.-

Be it known that I, JULES MIOHAUD, a citizen of the Republic of France,residing at 96 Rue dAssas, Paris, France, have invented a new and usefulImproved Rotary Printing- Press, (for which I have obtained LettersPatent in Great Britain, No. 1,635, dated J anuary 30, 1890, and inFrance, No. 202,626, dated December 16, 1889,) of which the following isa specification.

The present invention relates to an improved rotary printing press,which is more particularly adapted to book'work and also to ruling; thesheets printed may be of different sizes, both in the direction of thedevelopment of the cylinders as well as in the direction of thewidth ofthe machine.

In the accompanying drawings:Figure l, is a longitudinal section of thecomplete machine; Fig. 2, a longitudinal section of the cuttingcylinders, and shows the arrangement of gearing for driving same at avarying speed. Figs. 3 and 4, are both sections showing the action ofthe additional grippers 24: with which the accumulating cylinder isprovided. Fig. 5 is a section of the accumulating cylinder showing themeans for releasing the sheets which have been collected thereon.

The paper coming from a reel passes under a roller 2, Fig. 1, then overa cylinder 3. It is upon this cylinder that the ruling is effected bymeans of disks 4, of which the number and the arrangement on the rod 5which carries them, vary according to the nature of the work to beexecuted. The paper after passing under a roller 6, enters between thetwo rollers 7 and 8 which serve to carry it forward. I may heat therollers 2, 3 or 6, by steam or otherwise, so as to insure a more rapiddrying of the ruling.

The rate of feed of the paper is regulated by the speed of roller 7,against which bears the roller 8 and insures the forward movement of thepaper. The paper then passes between the two cutting cylinders 9 and 10,which make one revolution for each revolution of the printing cylinders,and thus cut sheets of which the size varies according to the variationsof speed of roller 7. Any suitable known means may be employed for vatoleave the front of the machine completely open so as to facilitateaccess thereto.

In order that the paper may be out well, it is necessary that thesurface speed of the cutting cylinders at the moment of cutting shouldbe practically the same as the rate of travel of the paper, otherwisethe cutting blade or saw carried by one ofthe cylinders, will makedistinct marks on the paper, by meeting same at a different speed thanits own, before the moment for cutting. result may be obtained by havingas many pairs of cylinders 9 and 10 as it is desired to producedifierent sized sheets in the direction of the development of thecylinders, the development of each of the cylinders of these pairs beingequal to the length of each of the different sizes. For this purpose itwill be necessary, as shown in Fig. 1, that the centers of the cylinders9, 10, may vary their position so as to approach each other when smallercylinders are used, and to recede from each other when largercylindersare used.

' In Fig. 2, I have shown another arrangeof the smallest size to bemade. With this 100 This arrangement if it is desired for example tomake the smallest sized sheet, it suflices for the cutting blade or sawof cylinder to come in contact with cylinder 9 at the moment when thecylinders revolve at their slowest speed. The largest and allintermediate sizes between the smallest and largest, may in the same waybe produced by causing the moment of cutting to correspond to thegreatest speed of the cylinders or to an intermediate speed.

Fig. 2 shows an arrangement for driving the cylinders 9, 10, so as toproduce the vary- 1ng speed. Shaft 32 actuated by the machine itselfmakes one rotation for each revolution of the printing cylinders; itcarries a bevel pinion gearing with a similar pinion mounted 011 thesame axis as the wheel 33. This wheel 33 gears with a wheel 31L of thesame diameter. On the axis of the wheel 34 is mounted a wheel 35 gearingwith another wheel 36. The two wheels 35 and 36 must not be circular,their pitch line being an ellipse, and they revolve round one of thefoci of such ellipse. On the axis of the wheel 36 is mounted a circularwheel 37 gearing with the wheel of the same diameter on the cyllnder 10.The wheel 35 therefore imparts a variable movement to the cylinder, thedifferences of speed being determined by the differences of the axes ofthe ellipse.

In practice the wheels 35 and 36 may be circumferences of which thecenter of rotation will be a small distance from the center of thefigure, the ,necessary play being allowed for the teeth of the gearing.To impart to the cylinders the speed suitable for the moment of cutting,it is only necessary to dismount the wheels 36 and 37, then to cause thecylinders 9, 10 to rotate the required distance and replace the twowheels 36 and 37, the wheels 36 always engaging wheel 35 at the samepoint, while wheel 37 will gear with the wheel of cylinder 10 at adifferent point to what it did before. The sheets cut pass between thecords or tapes 11 and 12, which carry them to the cylinder 13, thegrippers of which seize same. The cords 11 and 12 pass over rods mountedon movable pieces A, which are articulated on the axes B, thuspermitting all the cords to be raised and give access to the impressioncylinders 13 and 15.

The largest sheet which the machine can print in the direction of thedevelopment, is that equal to the development or circumference ofcylinder 13 less a part of the space occupied by the groove in whichmove the grippers; it will be seen by the foregoing description that themachine will also print all sizes of sheets smaller than that of thislargest sheet. The sheet seized by the grippers of the cylinder 13, isprinted by cylinder 14 on one side, then delivered to the grippers ofcylinder 15, which in its turn carries it forward, and is printed on theother side by cylinder 16. The rollers 17 and 18 which bear uponcylinder 15, are cleaning rollers which serve to remove the ofi-setdeposited on such cylinder, and avoid the soiling which such depositwould produce. The sheet printed on both sides is seized by the grippersof cylinder l9 and transmitted to cylinder 20, which is called anaccumulating cylinder; in the machine shown, the cylinder 20 has adevelopment double that of the printing cylinders.

I employ this arrangement so as to have the fliers to receive the sheetsnearly vertical and to, enable the delivery table to be raised,but I mayemploy a cylinder of equal diameter, or of three, four or more times thediameter of the printing cylinders.

' The direct transmission of a sheet from the grippers 21 of cylinder19, to the grippers 22 of cylinder 20 necessitates that when cylinder 20already carries a sheet held by the grippers 22, the latter open beforethe two cylinders come in contact, so as to penetrate into the groove ofcylinder 19 without tearing the sheet it carries, and also that thegrippers of cylinder 19 open and penetrate into the groove of thecylinder 20 without tearing the sheet that the latter has alreadygathered, it, therefore, follows that the sheets for a certain time arecompletely abandoned on the two cylinders. In so far as the sheet oncylinder 19 is concerned, this leads to no serious inconvenience, as thecords or tapes situated in the blank spaces will suffice to support thesheet during the time it is abandoned by the grippers. It is not thesame with cylinder 20; not only does the first sheet tend to detachitself from the cylinder by its weight, but further, the weight of thesecond sheet gathered is added to that of the first, then that of thethird, of the fourth, &c.,according to the number of sheets to bedelivered at a time. To remedy this inconvenience and to leave the cords23 arranged in the blank spaces to the simple function of supporting thetail or end of the set of sheets, I have placed in the groove ofcylinder 20, the grippers 2i which are brought to bear upon the sheetsgathered by the cylinder, during the time that the grippers 22 remainopen, and are lowered to seize a new one. The grippers 24 are mounted ona bar25,supported in arms 28 attached to bar 27, the bar 25 beingcapable of oscillation in the arc of the circle of which the bar 27 isthe center. The bar 25 carries at its end crank arms 25' provided withrollers, as 29, which come in contact with cams, as 51, in the rotationof the cylinder 20, whereby the grippers 24 are actuated to re lease thesheet. The bar 27 is also provided at its end with crank arms 27'carrying rollers, as 30, which ride upon cams, as 50.

Then the grippers 22 are to seize the first sheet carried by thegrippers of cylinder 19, they open, under the action of cam 52 actingupon roller 53 (see Figs. 3 and 4) and penetrating into the groove ofcylinder 19 seize the sheet abandoned by the latter at the moment whenthe forward edge of this sheet arrives in the line of the centers of thetwo cylinders. During this time the grippers 24 have remained at rest.When the sheet has been well laid upon cylinder 20 by the.

3. This backward movement results from.

the action of the cam 50 upon the roller 30. It is such that the grippermoves away without raising the sheet of paper placed over it, andconsequently without tearing it; before the grippers 22 again open, thegrippers .24 are raised under the action of the cam 51 acting upon theroller 29 (Fig. 4,) then by the simultaneous action of the cams 50 and51 acting upon the rollers 29 and 30, they advance and are lowered uponthe sheet. The grippers 22 are then raised and seize a new sheet, whichthey lay upon the first. The grippers 24 confined between the twosuperposed sheets are withdrawn as before without exercising anypressure upon either of the two sheets, and consequently without tearingthe same. When the cylinder 20 has thus gathered the determinate numberof sheets, the set collected is driven out in front of the fliers by theblades 31, after having been abandoned by the grippers 22 and 24, suchblades being actuated at the proper time in order to throw the set out,as shown in Fig. 5. For this purpose the axis of blades 31 is fittedwith a lever carrying a roller a which when the desired number of sheetshas been accumulated on cylinder 20 is acted upon by a cam b. This cam12 is brought to the required position when cylinder 20 has made thedesired number of revolutions, by means of another cam a mounted on ashaft making one revolution for the given number of revolutions-of suchcylinder 20. The blades 31 arethus moved outward as shown in Fig. 5, andin their movement a projection 61 on such blades comes in contact withand raises the grippers 22, so that the latter are caused to release theset of sheets accumulated on cylinder 20. At the same time the grippers24 also open under the action of the cam 51 (shown in Figs. 3 and 4)which actuates them at each revolution of cylinder 20, so that the setof sheets is entirely abandoned, and as their forward end is thrown outby the blades 31, the continued rotation of cylinder 20 causes them topass between the cordsor tapes 6 which may convey them to the fliersf.The cylinder 20 being of a.

of grippers 22 and 24, and of blades 31, the 7 operation being the samefor each set. There would only be one set of such organs 1f the diameterof the cylinder 20 were thesame as that of the printing cylinders, acylinder of which diameter as above stated I may employ if desired.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

1. In a rotary printing machine, the combination of two impressioncylinders disposed one above the other, cutting cylinders disposed apartfrom said impression cylinders, a sheet conveying mechanism fortransferring the sheets from the cutting cylinders to the impressioncylinders, and a pivoted lever on which said sheet conveying mechanismis mounted, said lever being adapted to sw ng away from both impressioncylinders givlng free access thereto.

2. In a rotary web printing machine, the combination ofcuttingcylinders, a frame in which saidcylinders are mounted, a separate frame,impression cylinders mounted one above the other in said separate frameat the end thereof which is nearest the cutting cylinders, and a lever,carrying the tapes for conveying the sheets from the cutting cylindersto the impression cylinders whereby on swinging back said lever, saidtapes will be displaced and give free access to both 1mpressioncylinders.

3. The combination of arotary cylinder, an inner rock shaft journaledtherein, arms fixed on said rock shaft, an outer rock shaft journaled inthe outer end of said arms, a gripper on said rock shaft, means forrocking said inner rock shaft to move the gripper backward withoutopening it, and means for oscillating said outer rock shaft to cause thegripper to open and close.

4. An accumulating cylinder fitted with two sets of grippers 22 and 24,the former mounted on a shaft capable of rocking in its bearings, andthe latter on a shaft mounted in arms 28 in which it can rock, such armsbeing secured to shaft 27, which is also capable of rocking in itsbearings, in combination with suitable cams for imparting the rockingmovements to all three shafts at the required times, substantially asset forth.

JULES MICHAUD.

Witnesses:

R. J. PRESTON, DAVID T. S. FULLER,

